Recall what happens when Forrest helps the orangutan, Sue, pee in a bottle.

Forrest believes that Sue needs to pee after being strapped in her seat for two days and provides a bottle. Upon finishing, Sue throws the bottle, smashing the glass and sending yellow globs around the cabin. A big one hits Fritch in the face, allowing Sue to rip up the control panel. Sue pulls the lever that releases the parachute and saves their lives.